4quad cot((51)/(4)+x)*cot((5)/(4)-x)=1" pronc "

cot((pi)/(4)-x)+cot((pi)/(4)+x)=4

4-cot((pi)/(4)+theta)cot((pi)/(4)-theta)=1

Show that cot(pi/4+x)cot(pi/4-x)=1

Show that cot(pi/4+x)cot(pi/4-x)=1

Show that cot(pi/4+x)cot(pi/4-x)=1

tan^(-1)(cot4x)

The sum of cot^(-1)((7)/(4))+cot^(-1)((19)/(4))+cot^(-1)((39)/(4))+cot^(-1)((67)/(4))..... oo is equal to :

The sum of the infinite series cot^(-1)((7)/(4))+cot^(-1)((19)/(4))+cot^(-1)((39)/(4))....oo

cot ^(-1)""x+cot^(-1)""2x=(3pi)/(4)